Ithini indawo ye-Fresnel kanye ne-CCQ (Ikhwalithi Yokuxhunywa Kweklayenti) noma izici ezibalulekile zekhwalithi ephezulu yebhuloho elingenantambo

Okuqukethwe

I-CCQ - kuyini?
Izinto ezintathu eziyinhloko ezithonya ikhwalithi ye-CCQ.
Fresnel zone - kuyini?
Ungabala kanjani indawo yeFresnel?

Kulesi sihloko ngifuna ukukhuluma ngezinto eziyisisekelo zokwakha ibhuloho elingenantambo lekhwalithi ephezulu, njengoba abaningi "abakhi benethiwekhi" bakholelwa ukuthi kuzokwanela ukuthenga imishini yenethiwekhi yekhwalithi ephezulu, ukufaka nokuthola ukubuya okungu-100% kubo - okuyinto ekugcineni akubona bonke abaphumelelayo.

I-CCQ - kuyini?

I-CCQ (Ikhwalithi Yokuxhunywa Kweklayenti) ihunyushwa isuka esiNgisini ngokuthi “ikhwalithi yokuxhuma iklayenti” - leyo, ngokomthetho, ebonisa isilinganiso sephesenti lalokho okucatshangwa ukuthi kungenzeka kumthamo wamanje wesiteshi, ngamanye amazwi, iphesenti lokuphuma okuzuziwe okukhulu ngangokunokwenzeka. ezintweni ezithile.

Isibonelo, usebenzisa okokusebenza okunamandla okuphuma ku-200 Mbit/s, kodwa empeleni isiteshi samanje singu-100 Mbit/s - kulokhu i-CCQ ingama-50%.

Emishinini yenethiwekhi Mikrotik и Ubiquiti kunezinkomba ezimbili ezihlukene
Tx. I-CCQ (Dlulisa i-CCQ) - izinga lokudluliswa kwedatha.
Rx. I-CCQ (Thola i-CCQ) - isivinini sokwamukela idatha.

Izinto ezintathu eziyinhloko ezithonya ikhwalithi ye-CCQ

1. Ukulungiswa kwezimpondo ezimbili. Uma sikhuluma ngebhuloho elingenantambo elisuka endaweni kuya ephuzwini, kuyacaca ukuthi izimpondo kufanele zibukane ngokunembe ngangokunokwenzeka, “iso ngeso.”

Uma udinga ibhuloho le-Wi-Fi elikhomba-kuya-ku-multipoint, khona-ke ekuqaleni udinga ukucubungula yonke i-architecture kusukela ku-antenna yomkhakha womhlinzeki kuya kweyeklayenti, ukuze baphambane ngokunembe ngangokunokwenzeka.

2. Ukuba khona komsindo esiteshini. Ngaphambi kokunquma imvamisa yebhuloho le-Wi-Fi, qiniseka ukuthi uhlola imvamisa ngayinye ukuba khona komsindo, ngokusekelwe kulokhu kuhlola, khetha imvamisa elayishiwe kancane.

3. Indawo yeFresnel.

Fresnel zone - kuyini?

I-Fresnel zone ingumthamo wesiteshi samaza omsakazo phakathi kwezimpondo ezimbili.

Ivolumu ephezulu yesiteshi itholakala endaweni emaphakathi phakathi kwezimpondo ezimbili.

Ukuze uthole isignali yekhwalithi ephezulu, udinga ukukhetha indawo ehlanzeke kakhulu, kokubili ezithiyoni ezibonakalayo nasemagagasi omsakazo (njengoba kuxoxwe ngawo endimeni yesibili).

Ungabala kanjani indawo yeFresnel?

Ifomula yokubala indawo yeFresnel endaweni yayo emaphakathi:

D—ibanga (km)
f - imvamisa (GHz)

Ifomula yokubala indawo yeFresnel nganoma yisiphi isikhathi, isibonelo esivimbelweni:

f - imvamisa (GHz)
I-D1 - ibanga ukuya endaweni yokubala oyidingayo, ukusuka ku-antenna yokuqala (km)
I-D2 - ibanga ukuya endaweni yokubala oyidingayo, ukusuka ku-antenna yesibili (km)

Ngemva kokusebenza kahle ngalezi zici ezintathu, ekugcineni uzothola ibhuloho elingenantambo elizinzile elinejubane eliphezulu kakhulu lokudluliswa kwedatha.

Source: www.habr.com